Malicious PDF — malware analysis report

Static analysis result for SHA-256 26773ba36814da7b…

MALICIOUS

PDF

36.5 KB Created: 2020-08-08 05:23:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a86dc6f7952664e3b0492a6a61f61563 SHA-1: d9908f750e7d547f0204d07f7dd95ec1182f190c SHA-256: 26773ba36814da7b4203b74d68344427be1f7f1af5d18ae03833a3114eac6f6f
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary link identified, 'https://ttraff.com/pify?keyword=business+ideas+in+telugu+pdf', is flagged as malicious and likely serves as the initial lure. The document body, though heavily obfuscated, contains this URL, suggesting the intent is to drive traffic to malicious infrastructure under the guise of providing business information.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=business+ideas+in+telugu+pdf
    • http://files.debbielegg.com/uploads/1/3/0/7/130775644/bizewoxu_jakidoviwobodu.pdf
    • http://files.joyrideeq.com/uploads/1/3/1/3/131380107/8378924.pdf
    • http://files.nopra.net/uploads/1/3/1/4/131438142/bawuno_ziwapunowas_puwemumobeg_toxosaw.pdf
    • https://cdn.shopify.com/s/files/1/0432/2079/5556/files/kadagulijojobagikov.pdf
    • https://cdn.shopify.com/s/files/1/0434/3365/6476/files/guitar_arpeggios_book.pdf
    • https://cdn.shopify.com/s/files/1/0437/5583/1445/files/tadujarananujoretikavoro.pdf
    • https://cdn.shopify.com/s/files/1/0441/3744/7576/files/reading_aloud.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3854/files/tuvegefosuduniji.pdf
    • https://cdn.shopify.com/s/files/1/0434/9270/4408/files/mopabemataresop.pdf
    • https://cdn.shopify.com/s/files/1/0449/7352/3112/files/vocabulario_administrativo_en_ingles.pdf
    • https://cdn.shopify.com/s/files/1/0434/9784/8996/files/58804738434.pdf
    • https://cdn.shopify.com/s/files/1/0438/4866/3200/files/25189573463.pdf
    • https://cdn.shopify.com/s/files/1/0437/2316/1768/files/34826912623.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/larabobed.pdf
    • https://cdn.shopify.com/s/files/1/0429/5219/6249/files/49197282072.pdf
    • https://cdn.shopify.com/s/files/1/0433/7192/1571/files/mukizetamofimudamez.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/denikiv.pdf
    • https://cdn.shopify.com/s/files/1/0431/8475/0747/files/dalemerigalamivefitovodom.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005230.bin
cb2ed70b1eb78b1e7e89a35b8a52f122966ef11202ea98fa88937bb809b20f96
pdf-font-stream PDF embedded font (sfnt) at offset 0x5230 5160 bytes
font_01_sfnt_off000063dd.bin
019693294762aee28e592debf57b99b80c07501b22b66c2a62fe6148e39efdc7
pdf-font-stream PDF embedded font (sfnt) at offset 0x63DD 9764 bytes